7EN02-0390-04

Configuration scenario 2: LPCT connected to secondary side of conventional CT

The LPCT is connected to the secondary side of a conventional transformer.

CT1 (L1) transformation ratio

500A:5A

LPCT transformation ratio

10A:1V

Meter transformation ratio (default)

1A:1V

Example:

The total transformation ratio is the product of all component transformation ratios. Set the meter CT ratio to match the total transformation ratio and measure the primary current at CT1.

CT ratio:

 

= CT1 ratio x LPCT ratio x Meter ratio

 

= 500:5 x 10:1 x 1:1

 

= 5000:5 (or 1000:1)

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